Expansion of psi(-q)/psi(-q^2) in powers of q where psi() is a Ramanujan theta function.

Terms

a(0) =1a(1) =-1a(2) =1a(3) =-2a(4) =1a(5) =-2a(6) =3a(7) =-3a(8) =4a(9) =-5a(10) =6a(11) =-7a(12) =8a(13) =-9a(14) =11a(15) =-13a(16) =16a(17) =-18a(18) =21a(19) =-24a(20) =27a(21) =-32a(22) =36a(23) =-41a(24) =48a(25) =-54a(26) =61a(27) =-70a(28) =78a(29) =-88